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   MathJax On WWF9.x

MathJax is a brilliant way to render mathematical formulas on your website.  This is a very simple modification.  See:

http://www.mathjax.org/

For more information.

Basic Setup

In forum_posts.asp, add this line directly before the 
<!-- #include file="includes/footer.asp" -->
 line right at the bottom of the page:

<script type="text/x-mathjax-config">
    MathJax.Hub.Config({
        "HTML-CSS": {
            scale: 180
        }
    });
</script>
<script type="text/javascript"
  src="http://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML">
</script>

You can add this in your head, but I prefer to put it at end of the body so it loads last after the rest of the page has loaded as it's not very high priority.

Then post this formula

\[ \left( \sum_{k=1}^n a_k b_k \right)^2 \leq \left( \sum_{k=1}^n a_k^2 \right) \left( \sum_{k=1}^n b_k^2 \right) \]

Simple, but good if you have a forum that needs maths!

Styling

http://www.mathjax.org/docs/1.1/CSS-styles.html#css-style-objects

See that link on how to style it with the config JS that you pasted in.